Device for sectioning individual sausages of continuosly extruded product

ABSTRACT

The present invention concerns a device ( 1 ) for portioning a food product ( 3 ) continuously extruded from a filling apparatus, preferably for making meat-base elongated extrusions in form of sausages, frankfurters and the like, wherein two front and opposed pincers ( 4 ) carry out a succession of neckings onto the extrusion ( 3 ), via outwardly and inwardly reciprocating alternate motions therebetween parallel, carried out by plural gearings, the kinematic motion enabling the pincers ( 4 ) to carry out axial displacement s concomitantly to said reciprocating motions, so as to follow the extruded product ( 3 ) in the feeding direction thereof and in predetermined lenghts which are variable by variably adjusting the angular velocities of said gearings.

The present invention refers to a portioning device for food products continuously extruded from a filling apparatus.

There are several known systems for portioning food extrusions following a conditioning of the surface of the latter, in order to manufacture sausage-shaped extrusions, cased or uncased and ready to be packaged, e.g. in tubs or in vacuum packages. Typically, in these systems there is provided a pair of opposed pincers carrying out outwardly or inwardly translating motions so as to generate a necking.

However, these systems entail the drawback of lacking a portioning station apt to portion the extruder-outletted extruded product variably and synchronically to the extrusion rate, so as to realize portions of variable length.

Hence, object of the present invention is to overcome said drawback by providing a device for portioning food extruded products that be apt to portion the extruder-outletted food extrusion at a speed variable with respect to the extrusion rate, thereby making food extrusion sections of variable length.

Therefore, the present invention provides a device for sectioning a continuously extruded product according to claim 1.

The invention will hereinafter be described according to a preferred embodiment thereof, given by way of example and without limitative purposes, with reference to the attached drawings, wherein:

FIG. 1 depicts, schematically and from the top, the portioning device according to the present invention incorporated in an extrusion apparatus;

FIG. 2 schematically depicts the device of the present invention incorporated in a different extrusion apparatus;

FIG. 3 is an elevational front view of the device of the present invention;

FIG. 4 shows the gear drive and the related pincers of the device of the present invention;

FIGS. 5A, 5B, 5C and 5D show four different types of pincers of the device of the present invention; and

FIG. 6 shows a cross section of the extrusion device of the present invention.

With reference now to FIGS. 1 and 2, according to the present invention it is provided that the portioning device 1 be located at the outlet of a filling pipe 8 apt to extrude a food product 3 in order to attain a compacting thereof with means unindurious to the newly-conditioned surface of the extrusion 3 (all better illustrated hereinafter).

The extrusion apparatus will not be detailed hereinafter, as it pertains to the state of the art and not to the present invention.

More precisely, and as it is illustrated in FIG. 2, the device 1 of the present invention as described hereto is dedicated to the sectioning into individual sausages 2 of a continuously extruded product 3. However, with a particular shape of the pincers 4 (better illustrated hereinafter), the same sectioning device 1 is likewise apt to constitute an ancillary device for sectioning and twisting a food product-filled flexible tubular casing (the so-called ‘gut’), forming a peduncle between a sausage and another subsequent sausage.

The individual sausages 2 thus made are conveyed away from the device 1 by a further conveying device. The conveying device may have shaped and opposed twin belts or chains 21, or a slanting race 22 made of a set of idle conical rollers that let the sausages gravity-fall on an optional downstream-located container.

According to this embodiment, the casing is periodically rotated onto the extrusion pipe 8 by a brake actuated by a drive 23. Concomitantly, and synchronously to the braking and twisting system 23, the two pincers 4 engage a filled product portion, thereby making a peduncle thereat. The sausages thus made, twisted and separated by a peduncle, are conveyed away from the portioning device by the abovedescribed conveying device.

With reference now to FIGS. 3, 4 and 6, it is provided that the portioning device 1 according to the present invention comprise a motor 9 power-supplying a gearbox 10 which houses a gear drive comprising a pinion 11 and two gears 12. More precisely, and as it is better illustrated in FIG. 4, the gears are coupled via two respective shafts 13 to two wheels 14 projecting from the gearbox 10, and to two driving pulleys 15 thereinside. Preferably, for the sake of practicality and of effectiveness of implementation, the motor is of DC type.

The two driving pulleys 15 drive two further driven pulleys 16 via a toothed belt 17. The driven pulleys 16 in turn drive two further wheels 18 and 19, via two shafts. It has to be pointed out that this type of drive provides a synchronous coupling with an opposite direction of rotation between the two wheel pairs.

On the other hand, each wheel pair is coupled to a pincer 4 hinged on two pins, each of the latter being positioned at a set radial distance with respect to the axis of rotation of the respective wheels 14, 18, 19 onto which it is mounted. Thus, the pincers 4 are frontally abutting and apt to swing cyclically, following the rotation of the wheels, so as to move outwardly and inwardly the one with respect to the other.

More precisely, the motion of the pincers 4 is subdivided in a first and a second step, generated by a different speed of the motor 9. In the first step, in which the pincers contact the product outletted from the extrusion pipe 8 generating the necking and the entailed sectioning of the same product, the pincer velocity component, which is parallel to the outlet direction of the extruded product 3, is required to be equal to or anyhow slightly greater than the outlet rate thereof.

In the second step, so-called non-operative and in which there is no contact between the pincers 4 and the extruded product 3, the speed of rotation of the wheels 14, 18 and 19, and therefore of the pincers 4, may be varied with suitable control means (not shown in the FIGS.) so as to obtain different lengths of sausage 2.

For this purpose, and with particular reference to FIG. 6, the synchronizing between the first step of necking and the non-operative step takes place via the use of a sensor 6, which detects the exact position of the pincers by contacting a circle-shaped sector 7 located onto the wheel 18.

With reference now to FIG. 5A, a first embodiment of the pincer 4 according to the device of the present invention is illustrated. This first embodiment of pincer is applied to a device as illustrated in FIG. 1 in which the shaping of uncased extruded product and the portioning thereof into individual sausages is required.

Therefore, each pincer 4 is shaped so as to have a substantially C-shaped end and two hemispheric caps 40 on both sides thereof. This shape makes the end of the pincer 4 apt to house a portion of the extruded product 3 outletted from the extrusion pipe 8 into the respective hemispheric regions 40 and, following the transversal swinging of each of the two pincers 4, to neck the surface of the extruded product 3 and to subsequently make individual sausages or portions 2 downstream of the extruded product 3.

FIG. 5B shows a second embodiment of the pincer 4 of the device of the present invention, according to which the employ thereof in an apparatus as in FIG. 2 is provided. Said apparatus provides a necking of the cased extruded product and a subsequent twisting thereof, without however separating or cutting the casing. For the sake of simplicity, alike reference numbers will indicate alike components.

According to this embodiment, the end of each pincer 4 has a substantially V-shaped end region 41. This shape makes the end of the pincer 4 apt to neck the surface of the extruded product 3, and to subsequently make individual sausages or portions 2, downstream of the extruded product 3, without however separating the casing containing the latter.

With reference now to FIG. 5C, a third embodiment of the pincer 4 of the device of the present invention is illustrated. In this case as well, for the sake of simplicity, alike reference numbers will indicate alike components. This embodiment is particularly indicated for cutting a cased extruded product. More precisely, this third embodiment differs from the first embodiment illustrated in FIG. 1 in that the former at one end thereof has a blade 42 located onto the free edge of the hemispheric region 40. The presence of the blade 42 ensures a safe cutting of the extrusion 3 following the necking and the making thereof.

With reference now to FIG. 5D, a fourth embodiment of the pincers d4 of the device of the present invention is illustrated. As in the preceding embodiments, for the sake of simplicity alike reference numbers will indicate alike components.

According to this fourth embodiment, in case a casing is adopted, and, additionally to the necking and twisting steps (hereto described according to the apparatus of FIG. 2) it be desirable to portion the extruded product 3 into individual sections, a second cutting device 43 mounted on a pincer 4 should be implemented. More precisely, the cutting device 43 provides a blade 44 that is swingably mounted onto one of the two pincers 4. The blade 44 is fulchrumed on a fixed portion of the pincer 4 and it is coupled to a pneumatic actuator 45 or the like mounted at the top of the pincer 4. Thus, following the operation of the actuator 45, a further cutting pressure can be exerted onto the casing of the extrusion 3 at the necking spot thereof, with the related making of a necked casing peduncle, so as to ensure an accurate separation of the latter.

Moreover, the pneumatic actuator 43 is controlled by the sensor 6. The latter will control the cutting of the casing during the rotary translation of the pincer 4. 

1. A device (1) for portioning a continuously extruded food product (3) coming out from a filling apparatus characterized in that it comprises portioning means (4,11,12,14,18,19) which are movable outwardly and inwardly with a reciprocating motion with respect to the extruded product (3) to be portioned, both in an orthogonal direction and in a parallel direction to that of feeding the extruded product (3) synchronically to and during the same portioning of the extruded product (3). 2-14. (canceled)
 15. The device (1) according to claim 1, characterized in that said portioning means comprises at least one pair of rod-shaped pincers (4) having a substantially “C-shaped” end, each pincer (4) being rotatably mounted onto drive gears (13,14,18,19) driven by a motor (9).
 16. The device (1) according to claim 15, wherein said motor (9) is apt to rotate with a variable speed of rotation during operation of the portioning device (1).
 17. The device (1) according to claim 1, wherein the arrangement of said portioning means (4) is such that during an operative step of portioning the extruded product (3) a traverse speed of said portioning means (4) is maintained substantially equal to a traverse speed of the extruded food product (3), whereas said traverse speed of said portioning means (4) is variable during a non-operative step of said portioning means (4) in order to generate portions of variable length of the extruded product (3).
 18. The device (1) according to claim 1, characterized in that a predetermined length of the extruded product (3) to be portioned is obtained by adjusting and maintaining constant an angular velocity of a pair of pincers (4) of the device in a non-operative time sector thereof by a predetermined value which is directly related to a length of a portion of the extruded product (3) to be formed.
 19. The device (1) according to claim 1, characterized in that a step of necking of the extruded product is implemented at a variable angular velocity on each degree of a sector covered and such that an axial speed component of a pair of pincers (4) of the device be equal to an axial feed rate of the extruded product (3).
 20. The device (I) according to claim 1, characterized in that synchronizing of a pair of pincers (4) of the device between an angular sector related to a step of necking and a remaining angular sector is obtained by means of a position sensor (6,7).
 21. The device (I) according to claim 1, characterized in that each pincer of a pair of pincers (4) of the device has the end thereof shaped to forming and/or sectioning an end portion of the extruded product (3) to be portioned.
 22. The device (I) according to claim 21, wherein each pincer of said pincers (4) has at an end thereof a pair of substantially hemispheric surfaces (40) apt to form and/or divide ends of an uncased extruded product (3) to be portioned.
 23. The device (1) according to claim 21, wherein each pincer of said pincers (4) has at an end thereof a substantially V-shaped necking region (41) apt to neck the extruded product (3) when the extruded product (3) is contained in a casing of animal or synthetic origin.
 24. The device (1) according to claim 21, wherein each pincer (4) at one end thereof has a pair of substantially hemispheric surfaces (40) and a blade (42) so as to form and divide ends of an uncased extrusion (3) to be portioned.
 25. The device (1) according to claim 21, characterized in that said pincers (4) further comprise a second cutting device (43) for sectioning the extruded product (3) when the latter is contained in a casing of animal or synthetic origin.
 26. The device (1) according to claim 25, wherein said second cutting device (43) comprises: a blade (44) swingably mounted onto a pincer (4) at the forming and/or necking region (41) thereof; and a pneumatic actuator (45) or the like, coupled to said blade (44) and mounted at the top of said pincer (4), the arrangement being such that following an operation of the actuator (43) a further cutting pressure is exerted onto said extruded product (3).
 27. The device (1) according to claim 15, characterized in that said portioning means further comprises: a frame (10) apt to house a gear drive (11,12) coupled to said motor (9); a drive comprising four aligned pulleys (15,16) and coupled to said gear drive (11,12), of said four pulleys the two central (15) being driving pulleys having opposed direction of rotation, whereas the two driven pulleys (16) are driven via toothed belts (17) respectively; four wheels (14,18,19) coupled each to a respective pulley of said four pulleys (15,16); and four pins (20) fixedly mounted at a determined radial distance onto each wheel of said four wheels (14,18,19) and for mounting said pincers (4) in a rotatable manner. 